had to make a rep of one sparkplug hole..bayed a rep set vith a tap 14-1.25..and a helicoil..
.but faund that that is standart thred for a bit bigger standart sparkplug..so have faund a 14 mm plug vho fits perfekt in the head..just have to find the exact heatrange....its a better rep then those helicoils..bad thing is to alvays have a spare plug..and renember hvere it fit...
a better vay is to cut a 14 mm plug ,,drill/cut it 12 mm threds and schrev it in the head...then the standart plug vill fit..and you can forget abaut it all..and better sell the bike..